Mercedes-Benz GL450 Operator's Manual page 144

Daytime running lamp mode
Turn the exterior lamp switch to
position M or U.
When the engine is running, the low
beam headlamps are switched on.
In low ambient light conditions, the
following lamps will switch on
additionally:
Tail and parking lamps
License plate lamps
Side marker lamps
i
With the daytime running lamp mode
activated and the engine running, you cannot
switch off the low beam headlamps manually.
Canada only
The daytime running lamp mode is manda-
tory and therefore in a constant mode.
i
With the exterior lamp switch in
position M or U, you cannot switch on the
high beam headlamps.
The high beam flasher is available at all times.
For nighttime driving turn the exterior lamp
switch to position B to permit activation of
the high beam headlamps.
When the engine is running, and you shift
from a driving position to position N or P,
the low beam headlamps will switch off
with a 3 minute delay.
When the engine is running, and you
turn the exterior lamp switch to
position C, the parking lamps and
the side marker lamps switch on
additionally
turn the exterior lamp switch to
position B, the manual headlamp
mode has priority over the daytime
running lamp mode
The corresponding exterior lamps
switch on ( page 60).
Controls in detail
USA only
By default, the daytime running lamp mode
is deactivated. Activate the daytime
running lamp mode using the control
system, see "Setting daytime running lamp
mode (USA only)" ( page 174).
i
With the exterior lamp switch in
position M, you cannot switch on the high
beam headlamps.
The high beam flasher is available at all times.
For nighttime driving turn the exterior lamp
switch to position B or U to permit
activation of the high beam headlamps.
When the engine is running, and you turn
the exterior lamp switch to position C
or B, the manual headlamp mode has
priority over the daytime running lamp
mode.
The corresponding exterior lamps switch
on ( page 60).
Lighting
143